Finding the Fourth Proportional to 31,054.61, 42,855.54 and 16,907.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,054.61 : 42,855.54 = 16,907.42 : x
2. Step 2: Convert to fraction form
   31,054.61/42,855.54 = 16,907.42/x
3. Step 3: Cross multiply
   31,054.61x = 42,855.54 × 16,907.42
4. Step 4: Simplify right side
   31,054.61x = 724,576,614.11
5. Step 5: Solve for x
   x = 724,576,614.11/31,054.61
6. Step 6: Final answer
   x = 23,332.34